SetupDiGetDeviceRegistryPropertyA function (setupapi.h)

Article
02/09/2023

The SetupDiGetDeviceRegistryProperty function retrieves a specified Plug and Play device property.

Syntax

WINSETUPAPI BOOL SetupDiGetDeviceRegistryPropertyA(
  [in]            HDEVINFO         DeviceInfoSet,
  [in]            PSP_DEVINFO_DATA DeviceInfoData,
  [in]            DWORD            Property,
  [out, optional] PDWORD           PropertyRegDataType,
  [out, optional] PBYTE            PropertyBuffer,
  [in]            DWORD            PropertyBufferSize,
  [out, optional] PDWORD           RequiredSize
);

Parameters

[in] DeviceInfoSet

A handle to a device information set that contains a device information element that represents the device for which to retrieve a Plug and Play property.

[in] DeviceInfoData

A pointer to an SP_DEVINFO_DATA structure that specifies the device information element in DeviceInfoSet.

[in] Property

One of the following values that specifies the property to be retrieved:

SPDRP_ADDRESS

The function retrieves the device's address.

SPDRP_BUSNUMBER

The function retrieves the device's bus number.

SPDRP_BUSTYPEGUID

The function retrieves the GUID for the device's bus type.

SPDRP_CAPABILITIES

The function retrieves a bitwise OR of the following CM_DEVCAP_Xxx flags in a DWORD. The device capabilities that are represented by these flags correspond to the device capabilities that are represented by the members of the DEVICE_CAPABILITIES structure. The CM_DEVCAP_Xxx constants are defined in Cfgmgr32.h.

CM_DEVCAP_Xxx flag	Corresponding DEVICE_CAPABILITIES structure member
CM_DEVCAP_LOCKSUPPORTED	LockSupported
CM_DEVCAP_EJECTSUPPORTED	EjectSupported
CM_DEVCAP_REMOVABLE	Removable
CM_DEVCAP_DOCKDEVICE	DockDevice
CM_DEVCAP_UNIQUEID	UniqueID
CM_DEVCAP_SILENTINSTALL	SilentInstall
CM_DEVCAP_RAWDEVICEOK	RawDeviceOK
CM_DEVCAP_SURPRISEREMOVALOK	SurpriseRemovalOK
CM_DEVCAP_HARDWAREDISABLED	HardwareDisabled
CM_DEVCAP_NONDYNAMIC	NonDynamic

SPDRP_CHARACTERISTICS

The function retrieves a bitwise OR of a device's characteristics flags in a DWORD. For a description of these flags, which are defined in Wdm.h and Ntddk.h, see the DeviceCharacteristics parameter of the IoCreateDevice function.

SPDRP_CLASS

The function retrieves a REG_SZ string that contains the device setup class of a device.

SPDRP_CLASSGUID

The function retrieves a REG_SZ string that contains the GUID that represents the device setup class of a device.

SPDRP_COMPATIBLEIDS

The function retrieves a REG_MULTI_SZ string that contains the list of compatible IDs for a device. For information about compatible IDs, see Device Identification Strings.

SPDRP_CONFIGFLAGS

The function retrieves a bitwise OR of a device's configuration flags in a DWORD value. The configuration flags are represented by the CONFIGFLAG_Xxx bitmasks that are defined in Regstr.h.

SPDRP_DEVICE_POWER_DATA

(Windows XP and later) The function retrieves a CM_POWER_DATA structure that contains the device's power management information.

SPDRP_DEVICEDESC

The function retrieves a REG_SZ string that contains the description of a device.

SPDRP_DEVTYPE

The function retrieves a DWORD value that represents the device's type. For more information, see Specifying Device Types.

SPDRP_DRIVER

The function retrieves a string that identifies the device's software key (sometimes called the driver key). For more information about driver keys, see Registry Trees and Keys for Devices and Drivers.

SPDRP_ENUMERATOR_NAME

The function retrieves a REG_SZ string that contains the name of the device's enumerator.

SPDRP_EXCLUSIVE

The function retrieves a DWORD value that indicates whether a user can obtain exclusive use of the device. The returned value is one if exclusive use is allowed, or zero otherwise. For more information, see IoCreateDevice.

SPDRP_FRIENDLYNAME

The function retrieves a REG_SZ string that contains the friendly name of a device.

SPDRP_HARDWAREID

The function retrieves a REG_MULTI_SZ string that contains the list of hardware IDs for a device. For information about hardware IDs, see Device Identification Strings.

SPDRP_INSTALL_STATE

(Windows XP and later) The function retrieves a DWORD value that indicates the installation state of a device. The installation state is represented by one of the CM_INSTALL_STATE_Xxx values that are defined in Cfgmgr32.h. The CM_INSTALL_STATE_Xxx values correspond to the DEVICE_INSTALL_STATE enumeration values.

SPDRP_LEGACYBUSTYPE

The function retrieves the device's legacy bus type as an INTERFACE_TYPE value (defined in Wdm.h and Ntddk.h).

SPDRP_LOCATION_INFORMATION

The function retrieves a REG_SZ string that contains the hardware location of a device.

SPDRP_LOCATION_PATHS

(Windows Server 2003 and later) The function retrieves a REG_MULTI_SZ string that represents the location of the device in the device tree.

SPDRP_LOWERFILTERS

The function retrieves a REG_MULTI_SZ string that contains the names of a device's lower-filter drivers.

SPDRP_MFG

The function retrieves a REG_SZ string that contains the name of the device manufacturer.

SPDRP_PHYSICAL_DEVICE_OBJECT_NAME

The function retrieves a REG_SZ string that contains the name that is associated with the device's PDO. For more information, see IoCreateDevice.

SPDRP_REMOVAL_POLICY

(Windows XP and later) The function retrieves the device's current removal policy as a DWORD that contains one of the CM_REMOVAL_POLICY_Xxx values that are defined in Cfgmgr32.h.

SPDRP_REMOVAL_POLICY_HW_DEFAULT

(Windows XP and later) The function retrieves the device's hardware-specified default removal policy as a DWORD that contains one of the CM_REMOVAL_POLICY_Xxx values that are defined in Cfgmgr32.h.

SPDRP_REMOVAL_POLICY_OVERRIDE

(Windows XP and later) The function retrieves the device's override removal policy (if it exists) from the registry, as a DWORD that contains one of the CM_REMOVAL_POLICY_Xxx values that are defined in Cfgmgr32.h.

SPDRP_SECURITY

The function retrieves a SECURITY_DESCRIPTOR structure for a device.

SPDRP_SECURITY_SDS

The function retrieves a REG_SZ string that contains the device's security descriptor. For information about security descriptor strings, see Security Descriptor Definition Language (Windows). For information about the format of security descriptor strings, see Security Descriptor Definition Language (Windows).

SPDRP_SERVICE

The function retrieves a REG_SZ string that contains the service name for a device.

SPDRP_UI_NUMBER

The function retrieves a DWORD value set to the value of the UINumber member of the device's DEVICE_CAPABILITIES structure.

SPDRP_UI_NUMBER_DESC_FORMAT

The function retrieves a format string (REG_SZ) used to display the UINumber value.

SPDRP_UPPERFILTERS

The function retrieves a REG_MULTI_SZ string that contains the names of a device's upper filter drivers.

[out, optional] PropertyRegDataType

A pointer to a variable that receives the data type of the property that is being retrieved. This is one of the standard registry data types. This parameter is optional and can be NULL.

[out, optional] PropertyBuffer

A pointer to a buffer that receives the property that is being retrieved. If this parameter is set to NULL, and PropertyBufferSize is also set to zero, the function returns the required size for the buffer in RequiredSize.

[in] PropertyBufferSize

The size, in bytes, of the PropertyBuffer buffer.

[out, optional] RequiredSize

A pointer to a variable of type DWORD that receives the required size, in bytes, of the PropertyBuffer buffer that is required to hold the data for the requested property. This parameter is optional and can be NULL.

Return value

SetupDiGetDeviceRegistryProperty returns TRUE if the call was successful. Otherwise, it returns FALSE and the logged error can be retrieved by making a call to GetLastError. SetupDiGetDeviceRegistryProperty returns the ERROR_INVALID_DATA error code if the requested property does not exist for a device or if the property data is not valid.

Remarks

Note

The setupapi.h header defines SetupDiGetDeviceRegistryProperty as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement	Value
Minimum supported client	Available in Microsoft Windows 2000 and later versions of Windows.
Target Platform	DesktopFor universal, call CM_Get_DevNode_Registry_Property
Header	setupapi.h (include Setupapi.h)
Library	Setupapi.lib

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